Getting hired at Google is as much of a Lottery as anything else. You really can't look at interview questions and beat yourself up. There are Google employees

Getting hired at Google is as much of a Lottery as anything else. You really can't look at interview questions and beat yourself up. There are Google employees who got hired doing much less, and other employees that had to work even harder to get hired. At that level, anyone who gets called to interview for Google is already qualified for the job. It really is a lottery at that point if you get the job.